The root element of the infoset is now displaying every defined namespace, instead of just the target namespace. So the test is expecting something like:

<tns:matrix xmlns:tns="http://www.example.org/example1/>

but is seeing the following:

<tns:matrix
xmlns:fn="http://www.w3.org/2005/xpath-functions" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:dfdl="http://www.ogf.org/dfdl/dfdl-1.0/" xmlns:tns="http://www.example.org/example1/" xmlns="http://www.w3.org/2001/XMLSchema">